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Rapid micro-nano reconstruction treatment method for copper metal and application of rapid micro-nano reconstruction treatment method

A processing method, micro-nano technology, applied in electrolysis components, electrodes, electrolysis process, etc., can solve the problems of low roughness and small specific surface area of ​​commercial copper metal, achieve simple process, low equipment requirements, increase specific surface area and The effect of roughness

Active Publication Date: 2022-05-24
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of small specific surface area and low roughness of commercial copper metal, and provide a fast micro-nano reconstruction treatment method of copper metal and its application in hydrogen production by electrolysis of water

Method used

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  • Rapid micro-nano reconstruction treatment method for copper metal and application of rapid micro-nano reconstruction treatment method
  • Rapid micro-nano reconstruction treatment method for copper metal and application of rapid micro-nano reconstruction treatment method
  • Rapid micro-nano reconstruction treatment method for copper metal and application of rapid micro-nano reconstruction treatment method

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specific Embodiment approach 1

[0032] Specific implementation mode 1: In this implementation mode, the rapid micro-nano reconstruction processing method of copper metal is implemented according to the following steps:

[0033] 1. Use copper or copper-based alloy metal materials as the precursor;

[0034] 2. With water as the solvent, the solute concentration is 0.5~5mol L -1 of (NH 4 ) 2 S 2 O 8 and 5~10mol L -1 NaOH, prepared to obtain a mixed oxidation solution;

[0035] 3. Put the metal material precursor in step 1 into a mixed oxidation solution for oxidation treatment, and obtain a metal oxide precursor with a micro-nano porous fiber structure after cleaning and drying;

[0036] 4. With water as the solvent, the solute includes 50-100g L -1 Dimethylamine borane (DMAB) and 10~50g L -1 NaOH, prepared to obtain a mixed reducing solution;

[0037] 5. The metal oxide precursor in step 3 is placed in a mixed reducing solution for reduction treatment to obtain a metal material with a micro-nano porou...

specific Embodiment approach 2

[0040] Embodiment 2: This embodiment is different from Embodiment 1 in that the copper-based alloy is brass, bronze, white copper or phosphor bronze.

specific Embodiment approach 3

[0041]Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the form of the metal material in Step 1 is powder, metal wire, metal sheet or metal film.

[0042] In this embodiment, the metal material can also be a prepared copper metal device, and a two-step solution processing method is used to realize the preparation of micro-nano fiber structure on the surface of the complex copper device.

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Abstract

The invention discloses a rapid copper metal micro-nano reconstruction treatment method and application thereof, and aims to solve the problems of small specific surface area and low roughness of commercial copper metal. The reconstruction treatment method comprises the steps that a metal material precursor is put into a mixed oxidation solution to be subjected to oxidation treatment, a metal oxide precursor with a micro-nano porous fiber structure is obtained after cleaning, then the metal oxide precursor is put into a mixed reduction solution to be subjected to reduction treatment, the mixed reduction solution contains (NH4) 2S2O8 and NaOH, and the metal material precursor is subjected to reduction treatment. And the metal material with the micro-nano porous fiber structure is obtained. According to the application, the copper metal with the micro-nano porous fiber structure is used as a current collector or a self-supporting electrode for hydrogen production through water electrolysis. According to the method, a two-step solution method is used for carrying out chemical oxidation and reduction treatment, and a micro-nano fiber structure is spontaneously formed on the surface of copper metal atoms through micro-nano spontaneous reconstruction of the copper metal atoms within the time range of several seconds, so that the purposes of improving the roughness and the specific surface area of the copper metal atoms are achieved.

Description

technical field [0001] The invention relates to a two-step solution treatment to quickly reconstruct micro-nano fiber structure on the surface of copper metal, and apply the treated copper metal to a self-supporting high-efficiency electrolysis water hydrogen production electrode. Background technique [0002] Copper is a non-ferrous metal closely related to human beings. It has excellent properties such as electrical conductivity, thermal conductivity, ductility, corrosion resistance, and wear resistance. It can be used as a variety of structural / functional materials and is widely used in electric power. , electronics, petrochemical, machinery and metallurgy, transportation, light industry, emerging industries and other fields, the consumption of non-ferrous metal materials in my country is second only to aluminum. [0003] In recent years, copper as a current collector has also been very important in the field of new energy. For example, copper foil is currently the curren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/052C25B11/061C25B11/077C25B1/04C25B11/031
CPCC25B11/052C25B11/031C25B11/061C25B11/077C25B1/04Y02E60/36
Inventor 王志红陈红磊闫瑞刚孙铁鑫周建华吕喆
Owner HARBIN INST OF TECH
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